Why is China, when NBC gives the Olympic medal count, hardly ever mentioned?

Been watching the Olympics and have noticed that China and some countries are not mentioned in the report of the medal count on NBC. But especially China, even after they won Gold wasn’t in that medal count after they won Gold in something.
...,It seems like they are being intentionally omitted in the reporting,
Now i have noticed that when NBC, in it’s time slotted News , they will mention it.
But the regular report that pops up on the screen once in awhile, China is never there.